The largest fundamental science agency in Europe will save €1.4 million annually by breaking free from Clavariate Analytics' huge databases of references and citations. "We have worked for free to lock ourselves collectively into a paid system", one head of the CNRS explains - but no more! 🎉

Happy to see that our paper on pure state entanglement and von Neumann algebras with @lvanluijk.bsky.social, @stotti-alex.bsky.social and Reinhard Werner is finally out in CMP 🥳 link.springer.com/article/10.1...

Even if you think you are not interested, you should take a look 😅.

I made a sign for the lab with our informal lab motto, inspired by this convo between @itaiyanai.bsky.social and Martin Lercher: nightscience.buzzsprout.com/1744020/epis.... A good reminder that talking is among the best forms of thinking!

Sie ist da: Die 1. Ausgabe meines #ArbeitInDerWiss Newsletters bei Steady, wo der Newsletter ab jetzt 1 neues Zuhause hat! 🤩 & dann auch noch 1 gemeinsamer Text mit @drkeichhorn.bsky.social! 🥰 Es geht um Kürzungen an Hochschulen & warum es nun Solidarität mit Geistes- & Sozialwissenschaften braucht.

Like embezzlement of entanglement but not von Neumann algebras? Check out arxiv.org/abs/2509.15749 where we show explicitly that generic Gaussian fermionic states provide universal embezzling families. Plus: A novel bound relating trace distance of Gaussian states to their covariance matrices.

New paper on entanglement in infinite quantum systems with @stotti-alex.bsky.social @arrr.de 🎉:  arxiv.org/abs/2509.12911 The paper investigates bipartitions of quantum systems with infinitely many degrees of freedom. Small thread below 👇

🥳I am very happy to have been awarded an ERC Starting Grant that I will use to start my own group and explore the large-scale entanglement properties of complex quantum systems. This would not have been possible without my fantastic collaborators and supervisors. A big "thank you" to all of you! 🙏

I wrote an op-ed on the world-class STEM research ecosystem in the United States, and how this ecosystem is now under attack on multiple fronts by the current administration: newsletter.ofthebrave.org/p/im-an-awar...

I have some related posts on this at mathstodon.xyz/@tao/1149568... and mathstodon.xyz/deck/@tao/11...

#IPAM (the institute for pure and applied mathematics) is facing a critical shortfall for operating expenses due to an unexpected suspension of NSF funding www.ipam.ucla.edu/news/nsf-fun... . Donations for emergency continuity of operations funding can be made at giving.ucla.edu/Campaign/Donat

If you find it strange that the inequality involves two arbitrary states, operator-valued weights come to your aid, giving meaning to the inverse of a state. This way, the inequality becomes a statement about the cp-odering of maps from B(H) to the subalgebras associated with systems B and BC.

Small paper w/ @lvanluijk.bsky.social and @stotti-alex.bsky.social: We revisit the amazing operator inequality by Lin et al. (arXiv:2211.13372), which implies strong sub-additivity of entropy and find that it's a special case of Connes' theory of spatial derivatives: arxiv.org/abs/2508.03731

Terence Tao (@teorth.bsky.social) has written a thread on Mastodon about the impact of the federal grant freeze to UCLA, particularly to his own field of Mathematics. UCLA's IPAM (Institute of Pure and Applied Mathematics) could shut down entirely mathstodon.xyz/@tao/1149568...

For the math folks on here: NSF has suspended Terry Tao's grant. www.nsf.gov/awardsearch/...

Happy to see that our paper on multipartite embezzlement with @lvanluijk.bsky.social and @stotti-alex.bsky.social is finally out in @quantum-journal.bsky.social quantum-journal.org/papers/q-202...

The devastating funding cuts to mathematics research in the US will cut-short the careers of a generation of mathematicians. It really is disgraceful, and unbelievably shortsighted. #MathSky www.scientificamerican.com/article/can-...

Henrik will soon talk about entanglement in the thermodynamic limit at LUH :).

Are you a student or early-career researcher in quantum computing or quantum information? Then the following is for you. We're organising a focused, community-driven conference at Leibniz Universität Hannover, hosted by Prof. Robert Raussendorf. 🗓️ Save the date: August 27–29, 2025

don't despair! there is still quantum...

Science writer Amanda Gefter spent more than a decade tracking down the people who knew him, and diving into a vast store of his unpublished work and private papers. A long read, but fascinating and moving. Link: nautil.us/finding-pete...

Thanks to @phys.org.web.brid.gy for covering our recent work with @stotti-alex.bsky.social and @lvanluijk.bsky.social on embezzlement of entanglement in critical systems: phys.org/news/2025-06... Paper: www.nature.com/articles/s41...

Cardiff is hosting the 38th British Topology Meeting from 9th - 11th September 2025. The registration is now open! Come along if you are looking for some interesting talks about all things topological. Details can be found here: sites.google.com/view/btm38 #MathSky #topology #AcademicSky

For those wondering what embezzlement of entanglement is, I have heard from Henrik (@arrr.de) that the Cambridge Dictionary is preparing an updated version…

Today our paper on universal embezzlement of entanglement in critical fermion systems has been published in Nature Physics: www.nature.com/articless415... Another intense collaboration with the great Lauritz (@lvanluijk.bsky.social) & Henrik (@arrr.de). Below is the former Twitter thread.

There is now an official announcement: The TIB has archived the current status of the arXiv: blog.tib.eu/2025/05/14/p...

Dass ausgerechnet die CSU-Politikerin Doro Bär, die noch vor wenigen Jahren den menschengemachten Klimawandel leugnete, jetzt neue Forschungsministerin werden soll - ein Job, bei dem es ganz besonders darauf ankommt, der Kraft der Wissenschaft zu vertrauen, ist m.E. hochproblematisch.

📢 PODCAST   Stupidity, Ideology, and Tariffs (plus: why protests matter a great deal)   New episode of Is This Democracy:

There are days in life that shake you. I’m shattered 💔 to share that I just found out that the US Government terminated my 2024 NIH Director’s Early Independence Award (~$2 million), threatening my long-promised assistant professor job at Columbia University & academic career... 1/🧵

I have a positive update regarding this matter: The German National Library of Science and Technology in Hannover (TIB, www.tib.eu) confirmed that they will download and archive the entire arxiv.org as a safety measure.

Is everyone huffing paint? Crypto guy claims to have built an LLM-based tool to detect errors in research papers; funded using its own cryptocurrency; will let coin holders choose what papers to go after; it's unvetted and a total black box—and Nature reports it as if it's a new protein structure.

We have a new paper 🎉: The large-scale structure of entanglement in quantum many-body systems Thanks to @lvanluijk.bsky.social and @stotti-alex.bsky.social for the great collaboration. arxiv.org/abs/2503.03833 Short thread below 👇 (1/n) #entanglement #quantum #quantuminformation

More disturbing news from Cardiff.

For this year’s #QIP2025 we sadly had to give our talk as a video. The upshot: Everyone can already watch @lvanluijk.bsky.social’s nice talk on pure state entanglement and von Neumann algebras! https://m.youtube.com/watch?v=U70p9sauZ_E #entanglement #quantum @stotti-alex.bsky.social

💾 ⬇️ www.democracynow.org/2025/2/28/in...

@cern.bsky.social Would that be an option for you? I understand that you are hosting open-access data sets for Zenodo anyway. @openaire.bsky.social

Come for my primer on the German far right - stay for my deep dive into the utterly bizarre Ex-Twitter conversation between Elon Musk and AfD leader Alice Weidel. It should serve as a reminder that the people spearheading the transnational assault on democracy are, in so many ways, the worst.

Part 2 of the collaboration with Terence Tao on the cosmic distance ladder is now out. It covers how we first learned the distances to planets, stars, and galaxies far, far away. youtu.be/hFMaT9oRbs4

Failing to understand Musk is all faux-visionary nonsense layered on top of megalomaniac ignorance fueled by extremist conspiracism was a devastating indictment even six months ago. Still buying into Musk genius worship now is just… well, it tells you all you need to know.

For newcomers, I and @vincentmourik.bsky.social wrote the 2012 Science article that literally started the Microsoft technical effort to build topological qubits. The paper is okay, and it includes a lot of negative evidence in the supplement (i made sure of it), 🧵 www.science.org/doi/10.1126/...

Quantum computing is an exciting field and most experts believe we'll build a useful device within decades. But quantum-hype from tech companies do the field a massive disservice. To cut through the bullshit I'd recommend following... ⚛️ 🧪 🧵 1/

Let me explain this Q&A explainer to you: "I am press's go-to guy for quantum, so I got to have some says for anything" scottaaronson.blog?p=8669

Der Platz vor der Oper ist wieder voll, #hannover steht wieder auf. Gegen die #afd, gegen #rechtsextremismus und für die #brandmauer! ✊🏼✊🏼✊🏼 #wirsindmehr #noafd #stopptdieafd #merz #union #cdu

Ich meine das mit dem Aufruf zum Wählen übrigens ernst. Laut Forsa könnten wir 28% (!) Nicht-Wähler_innen haben. Liebe Wissenschaftler_innen, liebe Wissenschaftsinstitutionen: Euch hören viele zu. Erinnert sie, wie wichtig Wählen ist. Für unsere Demokratie. & ermuntert sie, Botschaft weiterzutragen!

Alice Weidel nennt Universitäten "queer-woke Kaderschmieden" und sagt: "Wir schließen alle Gender Studies und schmeißen alle diese Professoren raus". Die Naturwissenschafts-Community muss sich hier klar auf die Seite der Geistes- & Sozialwissenschaft stellen. Das ist ein Angriff auf alle. (Thread)

Have to share that Ingrid Daubechies, one of my true mathematical heroes, was one of the honorees awarded the prestigous National Medal of Science by Pres. Biden. She is a role model to me! Congrats to Dr Daubechies!!! #MathSky today.duke.edu/2025/01/ingr...

My scientific year 2024 was entirely focussed on the curious „embezzlement of #entanglement“. Just in time PRL has published our short overview article: link.aps.org/doi/10.1103/... Thanks go out to @lvanluijk.bsky.social and @stotti-alex.bsky.social for the intense and fruitful collaboration! 🧪⚛️💚

Joint work with the fabulous @lvanluijk.bsky.social, @stotti-alex.bsky.social and R.F. Werner. The preprint is here: arxiv.org/abs/2401.07292

If you're curious about quantum computing and want to learn the basics, check out the "Quantum Quest" created by me and Michael Walter! www.quantum-quest.org/material